One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； May 23rd
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Multiple-choice question: When acetylene catches fire, it should be extinguished using or , and it is prohibited to use . A. Carbon dioxide extinguisher, foam extinguisher, water B. Carbon dioxide extinguisher, sand, water C. Foam extinguisher, sand, water D. Dry powder extinguisher, foam extinguisher, carbon dioxide extinguisher Answer: B. Carbon dioxide extinguisher, sand, water
B Carbon dioxide fire extinguisher, sand, water
B Carbon dioxide fire extinguisher, sand, water
B Carbon dioxide fire extinguisher, sand, water
Acetylene fires should be extinguished using B or B extinguishers; water must not be used. A. Carbon dioxide extinguisher, foam extinguisher, water B. Carbon dioxide extinguisher, sand, water C. Foam extinguisher, sand, water D. Dry powder extinguisher, foam extinguisher, carbon dioxide extinguisher
A. Carbon dioxide fire extinguishers, foam fire extinguishers, water
B Carbon dioxide fire extinguisher, sand, water